Blowpipe.



H. D. PALMER & B. 0. SANDERSON. BLOWPIPE. APPLICATION FILED SBPT.14, 1912.

1,106,965. Patented Aug. 11, 1914,

Nil'rETsses:

HARVEY D. PALMER BURTON C. SANDEB-SON, TQPEKA, KANSAS.

nnowrrrn.

Specification of Let'ters Patent.

Patented. Aug. 11, 1914.

application filed se ptemberfl, 1m. Serial no. 720,3; 5.

To all whom it may concern 1 Be it known that we, HARVEY D. PAL E and BURTON C. SANDnnsoN, citizens of thei United States, and residents of Topeka, in. the county of Shawnee and State of Kanf sas, have invented a certain new and useful. Improvement in Blowpipes, of which the following is a description, reference being 1 had to the accompanying drawing, which forms a part of our specification.

Our invention relates to a blow pipe 1 wherein crude oil is intended to be used to produce a blow pipe flame suitable for heat ing metal, such as boiler plates and the like; The object of the invention is to produce a burner or blow pipe whereby an intenseflame may be obtained and the flame directed against a small area or surface.

Another object of the invention is the production of a blow pipe which will be durable and which can be manufactured and maintained at the least possible cost; the 1 invention resulting in the production of a: burner or blow pipe, the parts whereof are readily accessible and assembled, as will be, more fully understood from the followingi detailed description. f In the drawing :Figure 1 is a side ele-f vation of our improved burner with a portion of the side wall of the blow pipe being broken away to moreclearly illustrate the internal nozzle or oil delivery conduit which extends within the body port-ion. Fig. 2 is a vertical sectional View of themain or body portion of the blow pipe or burner taken on the line 22 of Fig. 1 and looking in the direction of the arrows. Fig. 3 is a longitudinal sectional view taken on the line 33 of Fig. 2 and looking in thedirection of the arrows with portions of the supply pipes being shown in elevation.

In the exemplification of our invention the blow pipe consists of the main or body portion 1 which is preferably cylindrical in shape and open at one end as more clearly shown in Fig. 3, while the other or opposite end is provided with an end wall 5 provided with a suitable opening into which is insorted or screwed a supply pipe 6. The supply pipe 6' is shown ramified and communicates with a suitable reservoir or source of oil supply; and this conduit or pipe 6 is shown provided with a S itable lve as at7, whereby the supply of oil to the body portion 4: may be shut OH or regulated.

The inner end of one branch or ramification of pipe or conduit 6 terminates in or is supplied with an elongated nozzle 8 whereby the oil, which is under suitable pressure, is forced or discharged substantially at the longitudinal center of the cylindrical body portion or combustion chamber 4, and directed sl ibstantially along the axis of the main or body portion.

Ata point intermediate of the tip of the nozzle 8 and the Opposite end of portion 4:, a circumferential chamber?) is provided;

the chamber 9 being formed in the enlarged or thickened wall 10 of the main or body portion of the burner. This circumferent-ial chamber 9 is preferably located at a point substantially midway-between the ends of the main or body portion 4:, and at a suitable point, the outer wall 10' is provided with an opening, which leads to the circumferential chamber 9, into which opening the end of a branch 11 ofsupply pipe 6, extends. The pipe 11 ispreferably connected with the supplypipe 6, by means of connection 12, at a point beyond valve 7, that is, .at a

point intermediate of Valve 7 and the oil supply or reservoir. The pipe 11 is also shown provided with a suitable coupling 13, for the purpose of allowingadjustment; the coupling, however, may be eliminated if desired and a single piece pipe employed.

Pipe 11 is also provided with a suitable valve as at 14, whereby the flow of oil to the circumferential or annular chamber 9 may be controlled.

The circumferential or annular chamber 9 communicates with the inner or combustion chamber within the main or body portion 4; by means of a suitable number of radially arranged apertures or openings 15, as can be more clearly seen in Figs. 2 and 3. In the preferred construction of our blow pipe, we show the apertures or openings 15 arranged in two sets or series; the sets or series being preferably arranged at opposite sides or ends of the circumferential or annular chamber 9, see Fig. 3.

The end wall 5, of the main or body portion 4, is provided with a suitable number of circumferentially disposed perforations or openings 16; the openings being arranged Cir about the nozzle 8, as can be more clearly seenin Fig. 2. These openings 16 establish communication with the outside atmosphere, as shown in Fig. 3, for the purpose of admitting air into the combustion chamber within the main or body portion 4.

In the operation of our improved blowpipewhich is more especially intended for use in connection with crude petroleum and the like,the crude petroleum or oil from a supply under pressure is admitted to conduit or pipe 6 by opening valve 7. The oil fromconduit 6 is discharged-in a small stream through nozzle 8 into the combustion chamber within main or body portion'4 where ignition takes place. The oil discharged from nozzle 8 will entrain or induce a flow of air through the openings or perforations 16, so that proper oxidation of the oil is produced and perfect combustion within the chamber of body portion 4 obtained. Crude petroleum or oil, conducted from the same source of supply is then admitted to pipe 11 through the opening of valve 14. The opening of valve 14 allows oil to flow into the circumferential chamber 9 which surrounds the combustion chamber within main or body portion 4, at a point beyond where the oil is discharged into the chamber from nozzle 8. The ignition ofthe oxidized oil will heat the walls of the combustion chamber which will cause the oil Within the circumferential chamber 9 to become preheated by radiation from the combustion chamber. This preheated oil is discharged'into the combustion chamber through the perforations or holes 15 in a radial manner. The small radially directed streams will not only impinge against each other substantially at the center of the combustion chamber, but will also impinge against the longitudinally directed stream of oil discharged from nozzle 8. The impinging of the different streams of oil against one another causes the streams of oil to break up and become atomized. This breaking up or atomization of the streams of oil results in the complete ignition or combustion of the oil before it reaches or leaves the discharge orifice or mouth of the main or body portion 4 of the burner. The complete combustion within the burner and the directed products of combustion due to the formation of the burner results in a complete concentration of the flame outside of the combustion chamber, especially adapted for heating metal. The complete combustion of the oil results not only in an intense heat but also in economy of fuel, which would not be the case if a portion of the oil was not ignited until reaching the open air at or beyond the mouth or discharge orifice of the burner.

some oils, it may be found more desirable to,

arrange the openings in the circumferential chamber in a different manner from that shown and described or separate pipes employed instead of the ramified pipe shown; and it may be advantageous to alter the burner in certain other details, without however departing from the spirit of our invention, and we do not wish to be understood, therefore, as limiting ourselves to the exact construction shown and described.

lVhat we claim is 1. A blow-pipe, comprising a cylindrical member provided with a discharge end and with an air and oil receiving end, means whereby the oil will be directed in a longitudinal stream within said member, an oil receiving chamber arranged at a point intermediate of the ends of said member and forward of said means so as to receive the heat radiated from said member, and means whereby the oil from said chamber is discharged into the path of the longitudinally directed stream within the cylindrical member.

2. A blow-pipe, comprising an elongated member having an open end while the other end is provided with air inlets, means connected with the last mentioned end of said member and With an oil supply, said means terminating in a nozzle located parallel with the axis of the elongated member whereby the oil will be directed in a stream longitudinally within said member, and an oil receiving chamber arranged circumferentially about the walls of the member at a point forward of the nozzle and rearward of the open or discharge end of said member, said chamber being provided with radially arranged openings whereby'the oil from said chamber is directed into the path of the longitudinally directed stream of oil within the member.

3. A blow-pipe, comprising an elongated open ended member, a heating chamber arranged about said member at a point intermediate of the ends of the member, a ramified supply pipe having connection with one end of said member and with said chamber, the end of said supply pipe connected with the end of the elongated member having its discharge end arranged parallel with the axis of said elongated member so as to produce a longitudinally directed stream within the member from end to end, and means whereby the heated contents in said heating chamber will be discharged into the path of the longitudinal stream within said member and made to impinge thereon.

4. A blow-pipe, comprising an elongated member open at one end, the opposite end being provided with air inlets and having connection with a liquid fuel supply, means whereby the fuel will be directed in a longitudinal stream through said member, and a liquid fuel receiving chamber arranged about said member at a point intermediate against the longitudinally disposed stream in said member.

HARVEY D. PALMER.

of the ends thereof and forward of the point of discharge of said means so as to receive the radiated heat, said chamber being provided with oppositely disposed ports Where- BURTON C. SANDERSON. by the fuel Will be discharged from said Witnesses: chamber into said member in streams or jets W. G. MORRIS,

J G. MOENTYRE.

Cnpies of this patent may be obtained for five eents each, by addressing the Commissioner of Patents, Washington, D. 0.

adapted to impinge against each other and 

